Strainer.



E. E. HAUER.

STRAINER.

APPLICATION FILED MAY 15. me.

1 1 89,566 Patented July 4, 1916.

2 SHEETS-SHEET I.

E. E. HAUER.

STRAINEH.

APPLICATION men MAY 15, 1916.

l ,1 89,566. Patented July 4,1916.

2 SHEETS-SHEET 2.

- forth in the claims.

TED STATES Parana onrioni."

YELMER E. BAUER, OF SPRINGFIELD, OHIO, ASSIGNOR TO ELLIOTT COMPANY, OFPITTS- BURGH, PENNSYLVANIA, A CORPORATION OF PENN $YLVANIA.

STRAINER.

To all whom it may concern:

Be it known that I, Emma E. HAUER, a citizen of the United States.residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and useful Improvements in Strainers, of which thefollowing is a specification, reference being had therein to theaccompanying drawings. I

My invention relates to strainers and .more particularly to strainers ofthe multiple type in which one of the strainer elements can, be removedfor cleaning or re pairs While the other is in operative positionalthough the improvements may be used in strainers having a singlestrainer element,

The object of my invention is to provide an improved strainer in whichthe strainer element remains stationary while vthe valve is moved to cutit ofi from the flow of the fluid to bestrained.

A furtherobject is to provide improved means operated by fluid pressureto open and close the valves.

.With these and other objects in view my invention consists of theconstructions and combinations hereinafter described and set In theaccompanying drawings which form a part of this specification Figure 1is a longitudinal section of a strainer embodying my invention, saidsection being taken on theline 1-1 of Fig. 1; Fig. 2 is a cross-section,on the line 22 of Fig. 1; Fig. 3 is an enlarged section on the line 33of Fig. 1; Fig. 1 is a plan view and Fig. 5 is a longitudinal section onthe line 5-5 of Fig. 4:. a

In the drawings 1 represents a casing having a vertical. partltion 2forming an inlet passage 3 and a horizontal partition 4:

having openings 5 into a stralnmg chamber 7 6. An extension 7 of thecasing forms piston chambers 8 opposite the openings 5in thepartitionland each of said piston chamhers is provided with a head or cover 9secured thereto by bolts 10. p I

Strainer elements which are shown in the form of perforated cylinders 11are provided for each of the openings 5 and extend therein as shown.Each of said strainer the piston chambers. 1

Specification of Letters Patent.

7 element. movement'through the opening 5 carries Patented July 1, 1916.

Application filed May 15, 1916. Serial No. 97,725. i

The cylinders 11 are provided with bottoms 14; having centralcylindrical recesses 15 wlth oppositely disposed inwardly ex tendingflanges 16 and the supports 12 have flanges 16 and hold the cylinder inplace.

The strainer elements can be removed from the casing through openings19, said openings being provided with covers 20 hinged at 21 and securedin place by. bolts 22. The casing has an inlet 23 and an outlet 21withflanges adapted to be connected Wllll'l a pipeline.

Piston valves each comprising a cylinder '25 and a disk 26 provided witha stuifing:

box 27 and packing rings. 28 are movable from the piston chambers intothe strainmg chamber to seats 29 secured within the upperportion of thecasing as shown.

. To provide against excessive leakage through the space between thecylinders 11 and the walls of, the openings 5 when the piston valve isbelow the partition 1 a ring 30 is normally seated in said openingreducing the space or opening so that it will not pass foreign matter toany greater extent than the perforations in the strainer The pistonvalve in its closing the ring 30 with it and in its opening movementreturns it.

chamber through passages 37 which are supplied from the cooks 35 throughpipes 38.

Said cocks. have an exhaust pipe 39 secured thereto as shown.

When one of the piston valves is in its lowest position as shown at theleft of Fig. 5 and it is desired to raise and close the same the cockfor operating said valve is turned to the positionshown by the lower'cockiin Fig. 2 which admits the motive agent to the piston chamber andexhausts from the piston valve chamber through the passages and pipesheretofore described to the exhaust pipe. This movement causes thepiston valve to move upward until it closes against its seat so that thestrainer element can be removed for cleaning or repairs while the otherstrainer element is in operative position.

When one of the valves is in its upper position as shown at the right ofFig. 5 and it is desired to lower'the same into open position the cockfor operating said valve is turned to the position shown by the uppercock in Fig. 2 which admits the m0- tive agentto the piston valvechamber and exhausts from the piston chamber through the passages andpipes heretofore described to the exhaust pipe.

When desired an auxiliary device for holding the piston valve in itsupper or closed position independently of the pressure of the motiveagent may be employed and for this purpose I have shown an opening 40 inthe casing having screw-threads 4:1 and a stufling-box 42 and a spindle43 having a screw-threaded portion to engage the screw-threads of theopening and by turning the spindle with the handle ii its inner end willengage and hold the piston valve to its seat. V

Various modifications may be made in the form and arrangement of theparts without departing from the principle of my invention.

Having thus described my invention I claim:

v 1. The combination of a casing having an inlet and outlet, a strainerelement and a piston valve adapted to inclose and cut ofl said strainerelement from the flow of the fluid to be strained and means to admit anddischarge a motive agent to operate said piston valve, substantially asdescribed.

2. The combination of a casinghaving an inlet and outlet, a strainingchamber and a -piston chamber, a strainer element in said strainingchamber and a piston valve in said piston chamber movable into saidstraining chamber and adapted to cut ofl' said strainer element from theflow of the straining chamber and a piston valve in said piston chambermovable into said straining chamberand adapted to cutoff said strainerelement from the flow of the fluid to be strained, means to admit anddischarge a motive agent for the operation of said piston valve and acontrol forsaid means out- 'the operation of said side of said casing,substantially as described.

L. The combination of acasing-havingan inlet and outlet, a straining.chamber and a piston chamber, a strainer element in said strainingchamber and a piston valve in said piston chamber movable into said 5.The combination of a casing having an inlet and outlet, a strainingchamber and a piston chamber, a strainer element in said strammgchamberand a p ston valve in said piston chamber movable into saidstraining chamber and adapted to cut off said strainer element from theflow of the fluid to be strained, means to admit and discharge a.'motive agent for the operation of said pisprising a disk and cylinderin said piston chamber movable into said straining chamber and adaptedto cut off said strainer element from the flow of the fluid, astationary piston secured to the casing and forming with said pistonvalve a chamber therein I and means to admit and discharge a motiveagent to and from said piston chamber and to and from said piston valvechamber for piston valve, substantially as described. 1

- 7. The combination of acasing having an inlet and outlet, a strainingchamber and a piston chamber, a stramer'element lIiStld strainingchamber and a plston valve comprising a disk and cylinder in saidpiston; I

chamber movable into said straining cham ber and adapted to cut oif saidstrainer element fromthe flow of the fluid, a support for said strainerelement to which it is removably secured, said support also acting.-

as a stationary piston within said piston valve forming with saidvalve achamber therein and means to admit and discharge a motive agent to andfrom said piston cham ber and to and from said piston valve cham-.piston valve,

ber for the operation of said substantially as described. f

8. The combination of a casing having an inlet and outlet and apartitionwith an opening for the fiovw of-the fluid to be strained, a strainerelement secured in afixed posltion and extending 1nto said opening, aring seated 1n sald opening outside of said strainer element and a valvemovable itsseat, a valve movable through said opening and adapted tocarry said ring and cut off independently of said ring said strainerelement from the flow of the fluid, said casing having an opening forthe removal of the strainer element when said valve is in closedposition and a closure for said opening, substantially as described.

In testimony whereof Iv have hereunto aflixed my signature in thepresence of two 25 witnesses.

ELMER E. HAUER. Witnesses O. H. HAUsE, V. H. BAKER.

001ml of this patent may be obtained for five cents each, by addressingthe Commissioner 01. Patent'-. Wanhington, D. 0.

